David Lewis is Professor of Chemistry at the University of Wisconsin-Eau Claire, and holds B.Sc., Ph.D., and D.Sc. degrees from the University of Adelaide, in South Australia. His research over the last decade has been divided between synthetic organic chemistry and the history of chemistry (specifically, the history of organic chemistry in Russia). He is the author of over 100 refereed publications, of Advanced Organic Chemistry (Oxford: New York, 2016) and of The Wolff-Kishner Reduction and Related Reactions. Discovery and Development (Elsevier: Amsterdam, 2019). He is the recipient of the 2018 HIST Award for Outstanding Achievement in the History of Chemistry, and a 2019 Laureate of the V. V. Markovnikov Medal. He is a member of the Editorial Advisory Board of Minireviews in Organic Chemistry, and of the ad hoc Editorial Advisory Board of The Bulletin for the History of Chemistry, and a Fellow of the Royal Society of Chemistry and the Royal Australian Chemical Institute.

• 1. Introduction: The Place of Antagonism and Feuds in Advancing Science2. Vladimir Vasil'evich Markovnikov and Markovnikov's Rule for Addition3. Aleksandr Mikhailovich Zaitsev and Zaitsev's Rule for Elimination4. Markovnikov's Rule and Controversies Over It5. Mechanistic Considerations in Bimolecular Elimination Reactions6. Development of Highly Regioselective Addition Reactions7. Development of Highly Regiospecific Alkene Syntheses